avatar engine

[raym 11]

A better picture of my avatar engine

Upshure Marine from Model Engine Builder Mag.
It runs real good. The valve springs start floating ~ 1200 rpm so they become the 'top end' governor. I'm afraid it would scatter with stronger springs at full throttle.

Ray M

 

[zeusrekning]

Sweet! Any videos of it running?

 

[Powder keg]

Nice looking engine! I like the base:O)

Wes

 

[chuck foster]

very nice engine ray

i like the aluminum and brass they look real neat!

can we see a video of it running????

chuck

 

[cfellows]

That's a good looking engine. Did you follow the plans in Model Engine Builder for the Carburetor as well?

Chuck

 

[Brass_Machine]

Nice!

Like the cat too in the avatar.

Eric

 

[raym 11]

Bulk answer;

1)The brass base is actually the gas tank.

2)The carb is as per dwg. and works well. It even chills down and sweats when the dew point is right.(~50f)
The carb on the twin is of similar design and doesn't work as well. I just ran it on propane and no great change. When I build the 'foam' carb I'll give it a try.

3) I am going to make low resolution movies and try to upload with this Dial Up System. Any suggestions of how would be appreciated.
I would be ok with mailing existing CD if it comes to that.

Ray M

 

[AllThumbs]

No trouble with fuel draw with the tank way down there? I always see folk recommending tank hight just below the jet.

I really like the look of that base.

 

[cfellows]

2)The carb is as per dwg. and works well. It even chills down and sweats when the dew point is right.(~50f)
The carb on the twin is of similar design and doesn't work as well. I just ran it on propane and no great change. When I build the 'foam' carb I'll give it a try.

I see that the Carb does not automatically make the mixture richer when you open the throttle. Is that a problem?

Also, any theories why the Carb doesn't work as well on the 2 cylinder?

Chuck

 

[raym 11]

Chuck ,
I am not sure why although one design problem is the inlet manifolds. They are the same cross section (volume) and #1 is farther from the carb. than #2. Also as All Thumbs mentioned maybe I'm asking too much pulling the fuel up from the base.